Question: Which ester has the highest flash point?
Paraphrase: Which ester has the most elevated streak point?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q101487 . ?ent wdt:P2128 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: dimethyl sulfate, isoamyl acetate, amyl acetate, butyl acetate, propyl acetate